Method of producing small form pieces, especially buttons, from calcined gypsum, cement, or the like



operation than producing these antenna nannrcnn, or snasruamrrnnnor,GERMANY, assrenon TO cam,

WILHELM SCI-IULZ, or nnsmn, GERMANY.

IB/IETHOD OF PRODUCING SMALL FORM PIECES, ESPECIALLY BUTTONS, FROMCALCINED GYPSUM, CEMENT, OR THE LIKE.

N0 Drawing.

T 0 all 10 7mm it may concern Be it known that T, ARTHUR T'TAENICKE, acitizen of the German Republic, and a resident ot' Berlin-Tempelhot',Germany, have invented certain new and useful Improvements in a Methodof Producing Small Form Pieces, Especially Buttons, from Cal- -.inedGypsum, Cement, or the like, of which the following is a specification.

This invention relates to a method of producing buttons and similar"form pieces from calcined gypsum, cement or the like.

The purpose of the invention is to produce buttons from a cheap rawmaterial, which can be found in nearly any country, and to obviatethereby the importation oi horn, ivory-nut and. the like, of whichmaterials buttons were mostly made until now.

The material to he formed or shaped, for instance calcined gypsum, ispressed in dry condition into an appropriate mold and the pressed andshaped torm-piece is then lifted out of the mold, whereupon it is causedto set by moistening it with a suitable liquid, for instance water, andfor this purpose the liquid is suit-ably sprayed.

Tn this manner it is possible to produce from calcined gypsum, cement orsimilar materials term-pieces, as for instance but tons, with greaterexactness and speed of term-pieces for instance from a pulpy mass ctcalcined gypsum or cement or some other plastic material.

A pulp of calcined gypsum, for instance, which is wetted with only aslight quanti y o'l. water, can be molded only with diiliculty as itwill set too quickly; it more water is added, the pulp can he bettershaped or molded, but the structure ot the torm-piece would be veryincoherent and could not serve as material for making buttons, as itwill crumble to pieces very easily. Furthermore the form-piece can belifted "from the mold only after the setting has taken place.

According to the present invention however the dry and finely groundmaterial can be pressed into any desired shape and still dry be liftedimmediately out of the mold. Only after the shaping or molding of thematerial the setting of the same takes place.

If for this purpose the torm-pieceswould be submerged into water, theywould imme- Specrfication of Letters Patent.

Patented Aug. 29, 11922 diately fall to pieces, as the material willabsorb too much water, while when applymg the moisture to theform-pieces by means of a brush the surface of the same could be easilyinjured.

ldor these causes the liquid employed to etlect the setting of thematerial is sprayed upon the same, and the form-pieces, which eagerlyabsorb this liquid spray, are an posed to the same until they haveabsorbed Just that quantity of moisture, as is neces sary for thesetting of tlie material.

this method form-pieces of such a. rlgidity are produced, that they canhe used very successfully as buttons. The further treatment of theform-pieces then takes place in the known manner.

Instead of calcined gypsum cement or burnt magnesite or also a mixtureof these. materials can be employed advantageously. It burnt magnesiteis used, the setting otthe mass must be effected by means of a lye ofchloride oi magnesium.

However as it may be seen from the toregoing description, the employmentof difterentmaterials does not change in any manner the method of thepresent invent-lon.

Having thus particularly described the nature of my invention, what Iclaim as new and desire to secure by Letters Patent oi. the UnitedStates is:

1. The method of producing small. formpieces, especially buttons, from.calcined gypsum, cement or the like, which consists in pressing thematerial in dry condition into an appropriate mold, lifting the stilldry form-piece out of the mold and spraying the same with a suitableliquid "for the purpose of: effecting the setting oil the mas terial.

2. The method of producing small formpieces especially buttons, fromcalcined gypsum, cement or the like, which consists in pressing thematerial to be formed in dry condition into an appropriate mold, liftingthe still dry term-piece out of the mold and spraying the same with sucha quantity of a suitable liquid, as is just required for the setting ofthe material.

In testimony whereof I affix my signature.

ARTHUR HAENICKE.

